📄 bitblt.htm
字号:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="GENERATOR" content="Microsoft FrontPage 3.0">
<style><!--
body,table {font-family:"宋体"; font-size: 9pt; line-height:11pt;}
a {text-decoration:none} a:hover {color:red;text-decoration:underline}
--></style>
<title>BitBlt</title>
</head>
<body link="#FF0000" vlink="#FF0000" alink="#FF0000" bgcolor="#FFC8C8">
<div align="center"><center>
<table border="0" width="100%" height="22" cellspacing="0" cellpadding="0">
<tr>
<td width="100%" height="16">BitBlt</td>
</tr>
</table>
</center></div><div align="center"><center>
<table border="1" width="100%" bordercolorlight="#808080" cellspacing="0"
bordercolordark="#FFFFFF">
<tr>
<td width="100%" colspan="2">VB声明</td>
</tr>
<tr>
<td width="100%" colspan="2">Declare Function BitBlt Lib "gdi32" Alias
"BitBlt" (ByVal hDestDC As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth
As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As
Long, ByVal dwRop As Long) As Long</td>
</tr>
<tr>
<td width="100%" colspan="2">说明</td>
</tr>
<tr>
<td width="100%" colspan="2">将一幅位图从一个设备场景复制到另一个。源和目标DC相互间必须兼容</td>
</tr>
<tr>
<td width="100%" colspan="2">返回值</td>
</tr>
<tr>
<td width="100%" colspan="2">Long，非零表示成功，零表示失败。会设置<a
href="GetLastError.htm" tppabs="http://personal.hb.cninfo.net/~vbapi/GetLastError.htm">GetLastError</a></td>
</tr>
<tr>
<td width="100%" colspan="2">参数表</td>
</tr>
<tr>
<td width="25%">参数</td>
<td width="75%">类型及说明</td>
</tr>
<tr>
<td width="25%">hDestDC</td>
<td width="75%">Long，目标设备场景</td>
</tr>
<tr>
<td width="25%">x,y</td>
<td width="75%">Long，对目标DC中目标矩形左上角位置进行描述的那个点。用目标DC的逻辑坐标表示</td>
</tr>
<tr>
<td width="25%">nWidth,nHeight</td>
<td width="75%">Long，欲传输图象的宽度和高度</td>
</tr>
<tr>
<td width="25%">hSrcDC</td>
<td width="75%">Long，源设备场景。如光栅运算未指定源，则应设为0</td>
</tr>
<tr>
<td width="25%">xSrc,ySrc</td>
<td width="75%">Long，对源DC中源矩形左上角位置进行描述的那个点。用源DC的逻辑坐标表示</td>
</tr>
<tr>
<td width="25%">dwRop</td>
<td width="75%">Long，传输过程要执行的光栅运算</td>
</tr>
<tr>
<td width="100%" colspan="2">注解</td>
</tr>
<tr>
<td width="100%" colspan="2"><p align="left">在NT环境下，如在一次世界传输中要求在源设备场景中进行剪切或旋转处理，这个函数的执行会失败<br>
如目标和源DC的映射关系要求矩形中像素的大小必须在传输过程中改变，那么这个函数会根据需要自动伸缩、旋转、折叠、或切断，以便完成最终的传输过程</td>
</tr>
</table>
</center></div><div align="center"><center>
<table border="0" width="100%" cellspacing="0" cellpadding="0">
<tr>
<td width="100%"><p align="right">Top</td>
</tr>
</table>
</center></div>
</body>
</html>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -